ASTROSAT CZTI

Data Quality Report

Orbit 39749

Creation date: 2024-06-27T22:08:32.433249
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_022T01_9000005494_39749cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39749cztM0_level2_quad_clean.evt
Size (bytes)345,985,92093,473,280
Size330.0 MB 89.1 MB
Events in quadrant A3,202,438644,395
Events in quadrant B2,647,415653,326
Events in quadrant C2,819,879614,898
Events in quadrant D3,732,870553,768

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126823
B0111452
C0114422
D0144622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5199791.519523%
B5199541.038661%
C5199100.192345%
D51992454.712445%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7112 5200 48 48 0.67% 0.92%
B 7112 5200 38 38 0.53% 0.73%
C 7112 5200 9 9 0.13% 0.17%
D 7112 5200 226 226 3.18% 4.35%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 441160 3574.57 612 601 123.2
A 13 248 274960 2226.07 612 601 123.2
A 15 174 111248 897.76 612 601 123.2
B 5 255 122602 1063.33 599 583 114.8
B 10 246 90753 785.78 599 583 114.8
B 5 172 44190 380.01 599 583 114.8
C 15 214 216309 1589.92 586 589 135.7
C 15 208 165733 1217.16 586 589 135.7
C 9 187 124183 910.92 586 589 135.7
D 12 227 591340 4133.07 585 568 142.9
D 12 233 457741 3198.4 585 568 142.9
D 2 153 92283 641.64 585 568 142.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter